richardwei6

1. https://www.tal.org/tutorials/building-qt-515-raspberry-pi
2. EGLFS Compilation Error (both EGLFS Raspberry Pi + EGLFS EGLDevice is yes error)
3. Lib Install Error (Missing lib error in make install)
4. Project ERROR: xcb-xfixes development package not found

Touchscreen

4. https://forum.qt.io/topic/115562/how-to-make-widgets-react-to-touches-instead-of-mouse-clicks

richardwei6

//
//  Page2.swift
//  iOSWorkshop
//
//  Created by Richard Wei on 11/6/21.
//

import Foundation
import UIKit

richardwei6

//
//  ViewController.swift
//  iOSWorkshop
//
//  Created by Richard Wei on 11/6/21.
//

import UIKit

class ViewController: UIViewController {

richardwei6

#include <stdio.h>
#include <math.h>

int main(){
    
    char a;
    
    printf( "Enter a value: ");
    a = getchar( );

richardwei6

#include <stdio.h>
#include <math.h>

int main(){
    
    printf("\n%f", ceil(3.6));    
    printf("\n%f", ceil(3.3));    
    printf("\n%f", floor(3.6));    
    printf("\n%f", floor(3.2));    
    printf("\n%f", sqrt(16));    

richardwei6

#include <stdio.h>

#include <stdbool.h>

#include <math.h>

int main(){
    
    printf("Hello World\nNew line\nTest");
    

richardwei6

int solution(vector<int> a) {
    int n = a.size();

    vector<int> dp(n, 0); // init array of size n to 0
    
    int mx = 0; // find max dp value

    for (int i = n - 1; i > -1; i--) { // loop backwards from a
        
        int t = a[i]; // this DP value

richardwei6

extension UIColor{
  convenience init(hex: String, alpha: CGFloat = 1.0){
        
        var hex_copy = hex;
        let count = hex.count;
        
        if (count != 6 && count != 7){
            self.init();
            return;
        }

richardwei6

//
//  udpsocket.swift
//
//  Created by Richard Wei on 3/7/21.
//

import Foundation
import Network

// https://developer.apple.com/news/?id=0oi77447

richardwei6

//
//  AppUtility.swift
//  AHS
//
//  Created by Richard Wei.
//
import Foundation
import UIKit

struct AppUtility {